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Mayak Production Association (Ozyorsk)

Nuclear reprocessing complex in Chelyabinsk Oblast, Russia — 55.6900, 60.8400.

nuclearChelyabinsk OblastRussiaSpent-fuel reprocessing & isotope production

Mayak Production Association (Ozyorsk) is a nuclear reprocessing complex in Chelyabinsk Oblast, Russia. It functions as a Spent-fuel reprocessing & isotope production. It is operated by Rosatom. Current status: Operational. In service since 1948.

1948commissioned (~78 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id NUC-RU-MAYAK.

Data status

Known data

FacilityMayak Production Association (Ozyorsk) NTI / IAEA / public reporting
CountryRussia · Chelyabinsk Oblast NTI / IAEA / public reporting
Coordinates55.69, 60.84 NTI / IAEA / public reporting
Fuelnuclear NTI / IAEA / public reporting
OwnerRosatom NTI / IAEA / public reporting
Commissioned1948 NTI / IAEA / public reporting
TechnologySpent-fuel reprocessing & isotope production NTI / IAEA / public reporting

Calculated from dataset

Capacity rank in country#682 of 685 calculated
Fuel-specific rank in country#1 of 4 calculated

Not available

MW installed capacityNot available not in dataset
GWh reported / yrNot available not in dataset
CO₂ emissionsNot available not in dataset

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Facility overview

Mayak, near the closed city of Ozyorsk in the Urals, is one of Russia's oldest and largest nuclear complexes. Founded in 1948 to produce plutonium for the Soviet weapons programme, it now carries out spent-nuclear-fuel reprocessing, isotope production and waste management. It is the site of the 1957 Kyshtym disaster, one of history's worst radiological accidents.

Mayak is a reprocessing and production complex operated by Rosatom, not a power station; it generates no commercial electricity. It remains central to Russia's closed nuclear fuel cycle and is a recurring subject in non-proliferation and environmental monitoring.

In context: how this plant compares

Technically it is described as Spent-fuel reprocessing & isotope production. This facility converts its energy source into electricity for the grid; its capacity, fuel type and location determine its role in the national power mix.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

Owner

Operated by Rosatom.

Climate zone & how it works

This nuclear plant generates electricity for the grid. It sits in a warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 55.7°N — which shapes how much energy it can produce and how its output varies through the year.

~6°Ctypical annual mean
~19°Ctypical warm-season mean
Warm-summer humid continental: long cold winters and short, cool summers

Climate zone & typical temperatures: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

How it compares & nearby plants

Russia has 4 nuclear power plants in this dataset, together about 0 MW of capacity.

Nearby power plants

Location

Coordinates 55.69, 60.84 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Cutting heat loss at this plant

Plants like this lose energy through hot steam generators, turbines, feedwater heaters and valves. Inzonex makes removable, reusable turbine & feedwater insulation that cuts that loss by up to 96% and holds surface temperatures under 45°C, unclipping in seconds for maintenance. See the industrial-AI efficiency hub for tools and benchmarks.

Frequently asked questions

What is Mayak Production Association (Ozyorsk)?

Mayak Production Association (Ozyorsk) is a nuclear reprocessing complex in Chelyabinsk Oblast, Russia, operated by Rosatom.

Is Mayak Production Association (Ozyorsk) a power plant?

No — Mayak Production Association (Ozyorsk) is a nuclear reprocessing complex and does not generate grid electricity.

Where is Mayak Production Association (Ozyorsk) located?

It is located near Ozyorsk, Chelyabinsk Oblast, at approximately 55.690, 60.840.

What does Mayak Production Association (Ozyorsk) do?

Mayak Production Association (Ozyorsk) is used for Spent-fuel reprocessing & isotope production.

What is the current status of Mayak Production Association (Ozyorsk)?

Operational

Who operates Mayak Production Association (Ozyorsk)?

Mayak Production Association (Ozyorsk) is operated by Rosatom.

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